Nokia M1122 - Manual (Page 13)

M1122 Administrator Manual
E Copyright Nokia Networks Oy C33906001SE_00 2-2
This mode of operation reduces the need to have more than one public
Internet address. Furthermore, it prevents others from seeing and
accessing your private network and therefore it acts as a simple
firewall.
LAN
10Base-T
ATM
network
RAN
Customer
premises
DSLAM
Internet connection
Internet
10Base-T
Figure 2-1 High-speed Internet access